מחזור אוצר הראשונים השלם - יום כיפור אשכנז Machzor Otzar HaRishonim (Ashkenaz) - Yom Kippur

This monumental sefer is the first-ever comprehensive collection of the Rishonim’s commentaries on the tefilos and piyutim of Yom Kippur, gathered from a wide range of manuscripts—many of which are published here for the very first time.

The tefilos of Yom Kippur are among the most moving and awe-inspiring of the entire year. Yet for many, they remain difficult to fully grasp. The poetic structure, dense language, and profound themes often feel out of reach. Until now, explanations have largely come from the Acharonim, leaving us without direct access to the earliest mesorah on these sacred texts.

This groundbreaking edition restores the voices of the Rishonim to the center of Yom Kippur. For the first time, their commentaries on the Shemoneh Esrei, Viduy, Selichos, piyutim, and more are brought together in one volume—providing clarity, historical context, and spiritual depth to every section of the davening.

With its clear, accessible layout, this sefer is designed both for intensive learning and for meaningful use during tefilah itself. Each commentary is meticulously edited from manuscripts, with extensive footnotes explaining textual variants, sources, and background.

Whether used in preparation for the day or followed line-by-line during davening, this sefer will elevate your Yom Kippur, helping you connect more deeply with each tefilah, each word, each moment of teshuvah.

Included in this volume:

– The Rishonim’s commentaries on the full Yom Kippur tefilos, including many never-before-published
– Detailed peirushim on major piyutim and viduyim, unlocking their structure and meaning
– Commentaries that were previously printed have been re-edited from manuscripts, often restoring missing or corrupted sections
– Footnotes that offer both clarity and depth, suited for beginners and advanced learners alike
– A format that allows you to both learn from and daven with the text

This sefer brings the timeless voices of the Rishonim into the heart of your Yom Kippur.

913 pages, hardcover, plus 15-page introduction